fwjТрение и и износTitle in english0000-00000000-0000AGU10.32864/0202-4977-2025-46-3-231-239fwj-139Research ArticleСтатьиКонтролируемая трибосинтезом FeWO4 адаптационная способность покрытий WC/инструментальная стальAdaptability of WC/Tool Steel Coatings Controlled by Tribosynthesis of FeWO4СавченкоН. Л.SavchenkoN. L.

пр. Академический, 2/4, г. Томск 634055, Россия

pr. Akademicheskii, 2/4, Tomsk 634055, Russia

savnick@ispms.ruМосквичевЕ. Н.MoskvichevE. N.

пр. Академический, 2/4, г. Томск 634055, Россия

pr. Akademicheskii, 2/4, Tomsk 634055, Russia

ТарасовС. Ю.TarasovS. Yu.

пр. Академический, 2/4, г. Томск 634055, Россия

pr. Akademicheskii, 2/4, Tomsk 634055, Russia

Институт физики прочности и материаловедения Сибирского отделения Российской академии наукРоссияInstitute of Strength Physics and Materials Science of Siberian Branch Russian Academy of SciencesRussian Federation202507102026463231239Copyright © AGU, 20262026AGUAGUhttps://fwj.ejournal.by/jour/about/submissions#copyrightNoticehttps://fwj.ejournal.by/jour/article/view/139

Изучено влияние скорости скольжения на эволюцию приповерхностной структуры и трибоокисление покрытия из быстрорежущей стали, армированном WC, при трении по стальному контртелу без смазочного материала.

Электронно-лучевые композиционные покрытия получали из смеси порошковой стали Р6М5 и WC. Трение покрытий исследовали в контакте с контртелом из стали ШХ15. Установлено, что структура покрытий представляет собой матрицу на основе γ+α' железа, армированную скелетообразными структурами из эвтектических карбидов. Наблюдали одновременное снижение коэффициента трения и скорости изнашивания покрытий при увеличении скорости скольжения от 0,8 м/с до 3,6 м/с. Это связано с трибохимическим образованием вольфраматов железа FeWO4 и Fe2WO6 при скоростях скольжения 2,4 м/с и 3,6 м/с, что затем позволяет сформироваться поверхностному механически перемешанному слою, в состав которого, помимо вольфраматов железа, входят фрагменты карбидов и металлических частиц матрицы покрытия. Такая структура поверхности трения обеспечивает эффект твёрдой смазки, а также защищает нижележащие структуры покрытия от разрушения. Специфика такого механизма адаптации заключается в том, что он реализовывается при относительно низких скоростях скольжения, что соответствует максимальной расчётной температуре вспышки около 290 °С. Обнаруженный механизм трибологической адаптации должен способствовать успешному применению электроннолучевых композиционный покрытий WC/инструментальная сталь в различных отраслях промышленности.

The aim of the work is to study the effect of sliding velocity on the evolution of the subsurface structure and tribooxidation in a high-speed steel coating reinforced with WC after friction on a steel counterbody without a lubricant.

In this work, we studied the tribological behavior of electron-beam composite coatings obtained from a mixture of R6M5 powder steel and WC in contact with a counterbody made of SHH15 steel. It was found that the structure of the coatings is a matrix based on γ+α' iron, reinforced with skeletal structures of eutectic carbides. A simultaneous decrease in the friction coefficient and wear rate of the coatings with an increase in the sliding velocity from 0.8 m/s to 3.6 m/s was obtained. This is due to the tribochemical formation of iron tungstates FeWO4 and Fe2WO6 at sliding speeds of 2.4 m/s and 3.6 m/s, which then allows the formation of a surface mechanically mixed layer, which, in addition to the said iron tungstates, includes fragments of carbides and metal particles of the coating matrix. Such a friction surface structure provides a solid lubrication effect and protects the underlying coating structures from destruction. The specificity of such an adaptation mechanism is that it is realized at relatively low sliding speeds, which corresponds to the maximum calculated flash temperature of about 290 °C. The discovered tribological adaptation mechanism should contribute to the successful use of electron-beam composite coatings WC/tool steel in various industries.

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The authors declare that there are no conflicts of interest present.